Mitsubishi and Nanofiber to Develop Quantum Computer Interconnections

Mitsubishi Electric Corporation and Nanofiber Quantum Technologies have announced a collaborative project focused on the development of neutral-atom quantum computer interconnection technologies. The primary objective of this project is to create core optical quantum interface technologies that will combine qubit control and nanofibre cavity technologies specifically designed for neutral-atom quantum computers.

The project is scheduled to be completed by the end of March 2026. Neutral-atom quantum computers are known for their scalability advantages due to their high integration capabilities and the use of optical tweezers for flexible control of atom arrangement. However, the limitation lies in the number of quantum bits (qubits) that can be controlled within a single system, which is constrained by factors such as the available space for arranging atoms.

To overcome this challenge and enable large-scale quantum computing practically, new interconnection technology is essential to link multiple quantum computers and expand the number of qubits. The joint effort between Mitsubishi Electric and NanoQT aims to develop a photonic quantum interface that will facilitate highly efficient interconnections between neutral Yb atom quantum computers.

The key focus of the project is to establish an atom-photon interface that allows for efficient interconnections between neutral-atom quantum computers. By utilizing nanofibre cavities to enhance atom-photon interactions, the project aims to significantly increase the efficiency of generating quantum entanglement, a crucial element for communication between quantum computers.

Furthermore, the project will explore the parallelisation of entanglement sharing by storing multiple Yb atoms in nanofibre cavities. By combining these efforts with Mitsubishi Electric’s expertise in qubit control technologies, the project aims to achieve high-speed, large-capacity communication between quantum computers.

Mitsubishi Electric and NanoQT are committed to expediting the development of a prototype and establishing the fundamental technologies necessary for large-scale quantum computing. Moving forward, the focus will be on demonstrating optimised quantum-state transfer efficiency and refining control technologies through nanofiber cavities. The ultimate goal is to construct a distributed quantum computing platform that can effectively address real-world industrial challenges.